Quincy QR-25 Compressor?

[3/8"indestro]

I got this off Craigs for $100 today.Its got twin 108 pumps.two 1725 rpm Baldor's,3/4 hp.Only thing is,its a 3 phase,I've checked around and I think I can get a motor in the $90-100 each range.

I have a few questions as this is my first attempt at disassembling/cleaning a compressor.How do I take the belt out,I know there is a notch and bolt on the pulley,do I just loosen that bolt.Anyone familiar with this Quiincy model? Can I just run one pump/motor?

And regarding the replacement motor,do I just match the rpm and I'm good to go?

I"ll probably have a few more questions as I get to dissassembly/cleaning this thing.

http://img301.imageshack.us/img301/4206/quincyqr251.th.jpg (http://img301.imageshack.us/my.php?image=quincyqr251.jpg)

http://img16.imageshack.us/img16/8827/quincyqr25.th.jpg (http://img16.imageshack.us/my.php?image=quincyqr25.jpg)

[Truxx1956]

Hey man, I'm a Quincy nut, I have 3 of them and have had more over the years. They are the BEST compressor in my opinion. To loosen the belt, you just loosen the bolts that hold the motor to the tank bracket. They have slotted holes in them and that allows the motor to move closer to the pump and then the belt comes right off. I dont think you have 3 phase motors? I cant tell from the pics real well, but I think they are regular 1phase 220v motors. Theres a number stamped in the end of the crankshaft of the pump and whatever that number is tells what the "record of change" is on that particular pump.

They are single stage pumps and have 1 unloader valve on top of the head. They have the old hydraulic unloader on the side of the pump "which is much better than the newer ones" anyway, you have a real good setup there!! Yes you can just run one of the pumps, but once you get it up and running, you'll need to listen for leaks out of the other one to see if you have some valves leaking and such. You can email me directly if you need help, I know alot about these machines and have alot of connections with parts and such

trucks1956@yahoo.com

Good score by they way!!! Much better than the "throw away cambell's and HF junk"

[3/8"indestro]

thanks for the input.the number stamped on the end of the crank looks like "100".any idea what that means.'81 or 01".the Baldor motor has this label on it:

Frame 56
H.P 3/4
Volts 208-230/460
Amps 3.3-3.0/1.5
RPM 1725
Hz 60 PH 3

I turned the pumps by hand,and 1 of them has a slight knock,could be a rod? I checked the oil and it was almost empty.what kind of oil do I run on this thing? I'll put oil and see if it goes away,was planning to open them up anyway.

[sstruckguy]

My father-in-law used to own a compressor business and had visions of me moving it forward. His health issues and family future dictated he sell it and do something a little less hard on him.(he was a jockey before that)

Anyways, Truxx1956 is dead on, on his opinion of a Quincy pump. They are as good as it gets in my opinion as well. I'm not sure what application that you are going to use this for, but typically a dual pump rig is for volume. The 108 was a single stage machine so if you had dreams of anything over 120-ish psi, they won't do it.

Quincy does use an automotive style rod set-up with replaceable crank insert and piston pin bushing. They also use taperd roller bearings on their crankshafts. So unless something is broken, you should be able to handle the repair without much effort.

Also, you really need to stick to a 1725 rpm motor. You are already pulleyed correctly :beer:

[Truxx1956]

The "knock" you heard is most like ly the oil pump ring in the bottom of the pump. If it says PH 3 on your motor then indeed you do have a 3phasemotor, but a 1 phasemotor is cheap and as the other cat said, DO NOT change the rpm of the motor or the pulley size. Quincy pumps are designed to make the most air volume and PSI at the slowest pump rpm. Regular 30 weight oil NON detergent oil is best for these old machines. You can take the bolt on panel off the side of the pump where the dipstick goes in and check out the condition of the rod and pump screen. You should clean it up real good since it's probably been sitting for a while. As the other cat said, the 108 is not good for alot of PSI, but a dual mounted system as you have would run a single DA or grinder or such for a pretty good while without any problems.

Quincy pumps are pretty much rock solid continious duty machines (depending on the motor you get) Its hard to tell much from your pics (they are really blury) Where are you located?

GOOD luck dude:thumbup:

[3/8"indestro]

My father-in-law used to own a compressor business and had visions of me moving it forward. His health issues and family future dictated he sell it and do something a little less hard on him.(he was a jockey before that)

Anyways, Truxx1956 is dead on, on his opinion of a Quincy pump. They are as good as it gets in my opinion as well. I'm not sure what application that you are going to use this for, but typically a dual pump rig is for volume. The 108 was a single stage machine so if you had dreams of anything over 120-ish psi, they won't do it.

Quincy does use an automotive style rod set-up with replaceable crank insert and piston pin bushing. They also use taperd roller bearings on their crankshafts. So unless something is broken, you should be able to handle the repair without much effort.

Also, you really need to stick to a 1725 rpm motor. You are already pulleyed correctly :beer:

Most of my air tools are the usual,impacts,ratchets,grinders,sanders.which require less than 120 psi.I already have a 60 gal. CH that I got a pretty good deal from Lowes.Only thing with it is when I run my grinders and sanders it tries to catch up,pretty decent but it constantly runs with those air hogs.So I'm planning to use this as a dedicated sander,grinder compressor.

[3/8"indestro]

The "knock" you heard is most like ly the oil pump ring in the bottom of the pump. If it says PH 3 on your motor then indeed you do have a 3phasemotor, but a 1 phasemotor is cheap and as the other cat said, DO NOT change the rpm of the motor or the pulley size. Quincy pumps are designed to make the most air volume and PSI at the slowest pump rpm. Regular 30 weight oil NON detergent oil is best for these old machines. You can take the bolt on panel off the side of the pump where the dipstick goes in and check out the condition of the rod and pump screen. You should clean it up real good since it's probably been sitting for a while. As the other cat said, the 108 is not good for alot of PSI, but a dual mounted system as you have would run a single DA or grinder or such for a pretty good while without any problems.

Quincy pumps are pretty much rock solid continious duty machines (depending on the motor you get) Its hard to tell much from your pics (they are really blury) Where are you located?

GOOD luck dude:thumbup:

thanks much Truxx1956,you have been very helpful,really appreciate all your input.

I opened the side as you mentioned,and boy what a surprise.I was thinking metal shavings,broken bits.But,boy oh boy,this thing is pristine.I poured some oil before opening it,not even a piece of shavings in there.that oil looked like it came from the "mineral springs" where you get those spring water.that's how clear it was.the guy I bought it from said it was run in a body shop,so I could just imagine this thing was run hard.But I'm impressed on how clean and pristine this thing was,service or no service with the pump.It looks like it just got "broken in".I've seen worst blocks than this of about the same age or newer.

The knock that I mentioned is not from the rod,as per what you said.It's coming from that piece that have 2 springs in em.I think the springs have lost their tension,and on the upstroke/downstroke it makes that sound.

I'm in South Florida,there is a guy local selling some motors on ebay:
http://cgi.ebay.com/NEW-LEESON-LM24613-3-4-HP-SINGLE-PHASE-1725-RPM-MOTOR_W0QQitemZ270347528328QQcmdZViewItemQQptZLH_D efaultDomain_0?hash=item270347528328&_trksid=p3911.c0.m14&_trkparms=72%3A1205|66%3A2|65%3A12|39%3A1|240%3A13 18|301%3A0|293%3A1|294%3A50

do you think they would work,reliabilty wise or do you suggest I go for a pair of Baldor's.

thanks again dude,been very helpful.

[Truxx1956]

Hey man, as Columbo would say " just one more thing" anyway, if you are going to have it in your shop make sure you put a dust cover over your air filters to keep out the body dust and such. Also, if the 108 is like dad's old 230 it has a "vent" on the flywheel side of the pump which is a piece of flatbar bent up to allow air to the crankcase. You'll want to put a piece of foam or an old rag over it if it's going to be in your shop to keep dirt out of it. On ours, we run the pipe outside for the airfilter, it makes it quieter and keeps it out of the dust. You just need to have a little "house" over the filter out there to keep the elements out of it.

GOOD SCORE!!